# set -ex

VERSION=${1:-14}
OUT=./out
LOGIC=3

mkdir -p $OUT

echo "using mach-o version $VERSION"
if [[ $VERSION -ge 14 ]]
then
  echo "Resulting binary uses MODERN symbol resolver"
else
  echo "Resulting binary uses LEGACY symbol resolver"
fi

if [[ $LOGIC -eq 0 ]]
then

clang-format -i -style=llvm *.cc

elif [[ $LOGIC -eq 1 ]]
then
# full poc flow

echo "to be continue"
# remove imports
# remove mod init
# remove symtab dysymtab
# fix link edit section

elif [[ $LOGIC -eq 2 ]]
then
# remove imports test

# libc to test reexport custom lib
clang++ -mmacosx-version-min=$VERSION -o $OUT/libc.dylib -shared c.cc

# create our dummy lib first
clang++ -mmacosx-version-min=$VERSION -o $OUT/libb.dylib -shared -Wl,-reexport_library out/libc.dylib dummy.cc
# build a references libb
clang++ -mmacosx-version-min=$VERSION -o $OUT/a -L"./out" -lb a.cc

# extract symbols from a
../../macho-go/bin/ios-wrapper pepe -o $OUT/a-fixed -b $OUT/b.bcell --remove-imports --remove-exports --remove-symbol-table $OUT/a
../../macho-go/bin/ios-wrapper bcell2header -b $OUT/b.bcell -o $OUT/b.h
# build libb with symbols extracted from a
clang++ -mmacosx-version-min=$VERSION -o $OUT/libb.dylib -shared -Wl,-reexport_library out/libc.dylib b.cc

codesign --force --deep -s - $OUT/a-fixed
$OUT/a-fixed

elif [[ $LOGIC -eq 3 ]]
then
# remove imports test

# libc to test reexport custom lib
clang++ -mmacosx-version-min=$VERSION -o $OUT/libc.dylib -shared c.cc

# create our dummy lib first
clang++ -mmacosx-version-min=$VERSION -o $OUT/libb.dylib -shared -Wl,-reexport_library out/libc.dylib dummy.cc
# build a references libb
clang -fobjc-arc -ObjC -mmacosx-version-min=$VERSION -o $OUT/a -L"./out" -lb a.mm

# extract symbols from a
../../macho-go/bin/ios-wrapper pepe -o $OUT/a-fixed -b $OUT/b.bcell --remove-imports --remove-exports --remove-symbol-table $OUT/a
../../macho-go/bin/ios-wrapper bcell2header -b $OUT/b.bcell -o $OUT/b.h
# build libb with symbols extracted from a
clang++ -mmacosx-version-min=$VERSION -o $OUT/libb.dylib -shared -Wl,-reexport_library out/libc.dylib b.cc

codesign --force --deep -s - $OUT/a-fixed

# export OBJC_PRINT_LOAD_METHODS=1
# export OBJC_PRINT_CLASS_SETUP=1
$OUT/a-fixed
# unset OBJC_PRINT_LOAD_METHODS
# unset OBJC_PRINT_CLASS_SETUP

else

# dummy test build

clang++ -mmacosx-version-min=$VERSION -o $OUT/libc.dylib -shared c.cc
clang++ -mmacosx-version-min=$VERSION -o $OUT/libb.dylib -shared -Wl,-reexport_library out/libc.dylib b.cc
clang++ -mmacosx-version-min=$VERSION -o $OUT/a -L"./out" -lb a.cc

fi